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Teresita mine (Aramo Mine), Riosa, Asturias, Spain

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Epigenetic carbonate-hosted Cu/Co/Ni deposit.
Host-rocks : Black fetid Namurian bituminous limestones (700 meters thick).
Complex mineralization with three successive primary stages and an important later supergene stage:

1) Pyrite-marcasite-bravoite: Co/Ni sulfarsenides and arsenides in dolomite; associated with acanthite. Cobaltite, Safflorite, gersdorffite.
2) Intermediate stage: Tennantite and sphalerite in quartz/dolomite.
Renierite. Chalcopyrite (with briartite inclusions) and talnakite replacing early assemblage. Tennantite and sphalerite replace cobaltite and safflorite.
3) Cu/Fe sulphides: Chalcopyrite, talnakite and bornite. Chalcocite, djurleite, digenite, covellite.
4) Oxidation sequence: Cementation copper sulfides, native elements and oxidation minerals.

Production and reserves: 200,000 tons extracted.
400,000 tons ore reserves @ 1-3% Ni and 1-3% Co, 1-20% Cu.

Ref.:
Paniagua, A. et al (1988) Bull. Minéral: 111: 383-391.





Mineral List:
  		•  Acanthite
    Ag
     
    2
    		S
    Reference: [A. Paniagua et al. , Bull. Minéral. , 1988, 111, pp. 383-391.]
  		•  Azurite
    Cu
     
    3
    		[OH|CO
     
    3
    		]
     
    2
    Reference: [A. Paniagua et al. , Bull. Minéral. , 1988, 111, pp. 383-391.]
  		•  'Bitumen'
    Reference: [A. Paniagua et al. , Bull. Minéral. , 1988, 111, pp. 383-391.]
  		•  Bornite
    Cu
     
    5
    		FeS
     
    4
    Reference: [A. Paniagua et al. , Bull. Minéral. , 1988, 111, pp. 383-391.]
  		•  Bravoite
    (Fe,Ni)S
     
    2
    Reference: [A. Paniagua et al. , Bull. Minéral. , 1988, 111, pp. 383-391.]
  		•  Briartite
    Cu
     
    2
    		(Fe,Zn)GeS
     
    4
    Reference: [A. Paniagua et al. , Bull. Minéral. , 1988, 111, pp. 383-391.]
  		•  Calcite
    CaCO
     
    3
    Description: Late carbonate phase.
    Reference: [A. Paniagua et al. , Bull. Minéral. , 1988, 111, pp. 383-391.]
  		•  Chalcocite
    Cu
     
    2
    		S
    Reference: [A. Paniagua et al. , Bull. Minéral. , 1988, 111, pp. 383-391.]
  		•  Chalcopyrite
    CuFeS
     
    2
    Reference: [A. Paniagua et al. , Bull. Minéral. , 1988, 111, pp. 383-391.]
  		•  Cobaltite
    CoAsS
    Reference: [A. Paniagua et al. , Bull. Minéral. , 1988, 111, pp. 383-391.]
  		•  Copper
    Cu
    Reference: [A. Paniagua et al. , Bull. Minéral. , 1988, 111, pp. 383-391.]
  		•  Covellite
    CuS
    Reference: [A. Paniagua et al. , Bull. Minéral. , 1988, 111, pp. 383-391.]
  		•  Cuprite
    Cu
     
    2
    		O
    Reference: [A. Paniagua et al. , Bull. Minéral. , 1988, 111, pp. 383-391.]
  		•  Digenite
    Cu
     
    9
    		S
     
    5
    Reference: [A. Paniagua et al. , Bull. Minéral. , 1988, 111, pp. 383-391.]
  		•  Djurleite
    Cu
     
    31
    		S
     
    16
    Reference: [A. Paniagua et al. , Bull. Minéral. , 1988, 111, pp. 383-391.]
  		•  Dolomite
    CaMg(CO
     
    3
    		)
     
    2
    Reference: [A. Paniagua et al. , Bull. Minéral. , 1988, 111, pp. 383-391.]
  		•  Erythrite
    Co
     
    3
    		(AsO
     
    4
    		)
     
    2
    		·8H
     
    2
    		O
    Reference: [A. Paniagua et al. , Bull. Minéral. , 1988, 111, pp. 383-391.]
  		•  Gersdorffite
    NiAsS
    Reference: [A. Paniagua et al. , Bull. Minéral. , 1988, 111, pp. 383-391.]
  		•  Gold
    Au
    Description: Chemical gold in cuprian pyrites, cuprian bravoites and Co/Ni arsenides. Native gold microparticules.
    Reference: [A. Paniagua et al. , Bull. Minéral. , 1988, 111, pp. 383-391.]
  		•  Malachite
    Cu
     
    2
    		[(OH)
     
    2
    		|CO
     
    3
    		]
    Reference: [A. Paniagua et al. , Bull. Minéral. , 1988, 111, pp. 383-391.]
  		•  Marcasite
    FeS
     
    2
    Reference: [A. Paniagua et al. , Bull. Minéral. , 1988, 111, pp. 383-391.]
  		•  Olivenite
    Cu
     
    2
    		[OH|AsO
     
    4
    		]
    Reference: [A. Paniagua et al. , Bull. Minéral. , 1988, 111, pp. 383-391.]
  		•  Pyrite
    FeS
     
    2
    Reference: [A. Paniagua et al. , Bull. Minéral. , 1988, 111, pp. 383-391.]
  		•  Quartz
    SiO
     
    2
    Reference: [A. Paniagua et al. , Bull. Minéral. , 1988, 111, pp. 383-391.]
  		•  Renierite
    (Cu,Zn)
     
    11
    		(Ge,As)
     
    2
    		Fe
     
    4
    		S
     
    16
    Description: Zn/As-renierite.
    Reference: [A. Paniagua et al. , Bull. Minéral. , 1988, 111, pp. 383-391.]
  		•  Safflorite
    (Co,Fe,Ni)As
     
    2
    Reference: [A. Paniagua et al. , Bull. Minéral. , 1988, 111, pp. 383-391.]
  		•  Silver
    Ag
    Reference: [A. Paniagua et al. , Bull. Minéral. , 1988, 111, pp. 383-391.]
  		•  Sphalerite
    (Zn,Fe
    2+
     
    		)S
    Reference: [A. Paniagua et al. , Bull. Minéral. , 1988, 111, pp. 383-391.]
  		•  Tennantite
    (Cu,Ag,Fe,Zn)
     
    12
    		As
     
    4
    		S
     
    13
    Reference: [A. Paniagua et al. , Bull. Minéral. , 1988, 111, pp. 383-391.]
  		•  Tenorite
    CuO
    Reference: [A. Paniagua et al. , Bull. Minéral. , 1988, 111, pp. 383-391.]


    30 entries listed. 28 valid minerals.

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